O.K. Guys, let an Oldtimer add his two cents worth:
I did "the world" in four instalments:
(1) 1997-98, From Ottawa, Canada up to Prudhoe Bay, Alaska, then down to Ushuaia, Tierra del Fuego, and back home to Ottawa. Crossed the equator twice.
(2) 1999, From Ottawa by air to London, England, then across Europe and Russia to the Pacific at Valdivostok, over to China, and back to London via the Silk Road, Kashgar, Khunjerab, Pakistan, Iran, and by air back home.
(3) 2000, by air from Ottawa to London, then south to Gibraltar, over to Africa, down the west coast to Cape Town, up the east coast to Cairo, then Jordan, Israel, Greece, London, and back home. Crossed the equator twice.
(4) 2002, by air from Ottawa to London, then up to Nordkapp, over to Russia, Finland, Sweden, etc to Greece, Turkey, Iran, Pakistan, India, Bangladesh, by air to Bangkok, then Malaysia, Singapore, by air to Perth, Australia, up to Cape York, down to Sydney, by air to Los Angeles, by road home.
Crossed the equator twice.
You can buy all the four book written about these trips on this website. Goto "Books."